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https://github.com/kaspanet/kaspad.git
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d14809694f
* [NOD-1223] Delete unused files/packages. * [NOD-1223] Move signal and limits to the os package. * [NOD-1223] Put database and dbaccess into the db package. * [NOD-1223] Fold the logs package into the logger package. * [NOD-1223] Rename domainmessage to appmessage. * [NOD-1223] Rename to/from DomainMessage to AppMessage. * [NOD-1223] Move appmessage to the app packge. * [NOD-1223] Move protocol to the app packge. * [NOD-1223] Move the network package to the infrastructure packge. * [NOD-1223] Rename cmd to executables. * [NOD-1223] Fix go.doc in the logger package.
67 lines
1.9 KiB
Go
67 lines
1.9 KiB
Go
package coinbasepayload
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import (
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"bytes"
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"encoding/binary"
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"github.com/kaspanet/kaspad/app/appmessage"
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"github.com/kaspanet/kaspad/util/binaryserializer"
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"github.com/pkg/errors"
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)
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var byteOrder = binary.LittleEndian
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// SerializeCoinbasePayload builds the coinbase payload based on the provided scriptPubKey and extra data.
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func SerializeCoinbasePayload(blueScore uint64, scriptPubKey []byte, extraData []byte) ([]byte, error) {
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w := &bytes.Buffer{}
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err := binaryserializer.PutUint64(w, byteOrder, blueScore)
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if err != nil {
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return nil, err
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}
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err = appmessage.WriteVarInt(w, uint64(len(scriptPubKey)))
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if err != nil {
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return nil, err
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}
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_, err = w.Write(scriptPubKey)
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if err != nil {
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return nil, err
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}
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_, err = w.Write(extraData)
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if err != nil {
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return nil, err
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}
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return w.Bytes(), nil
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}
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// ErrIncorrectScriptPubKeyLen indicates that the script pub key length is not as expected.
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var ErrIncorrectScriptPubKeyLen = errors.New("incorrect script pub key length")
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// DeserializeCoinbasePayload deserializes the coinbase payload to its component (scriptPubKey and extra data).
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func DeserializeCoinbasePayload(tx *appmessage.MsgTx) (blueScore uint64, scriptPubKey []byte, extraData []byte, err error) {
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r := bytes.NewReader(tx.Payload)
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blueScore, err = binaryserializer.Uint64(r, byteOrder)
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if err != nil {
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return 0, nil, nil, err
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}
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scriptPubKeyLen, err := appmessage.ReadVarInt(r)
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if err != nil {
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return 0, nil, nil, err
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}
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scriptPubKey = make([]byte, scriptPubKeyLen)
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n, err := r.Read(scriptPubKey)
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if err != nil {
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return 0, nil, nil, err
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}
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if uint64(n) != scriptPubKeyLen {
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return 0, nil, nil,
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errors.Wrapf(ErrIncorrectScriptPubKeyLen, "expected %d bytes in script pub key but got %d", scriptPubKeyLen, n)
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}
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extraData = make([]byte, r.Len())
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if r.Len() != 0 {
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_, err = r.Read(extraData)
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if err != nil {
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return 0, nil, nil, err
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}
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}
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return blueScore, scriptPubKey, extraData, nil
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}
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